Benelli ZAFFERAN 250 - Failure Diagnosis

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2.2 Failure Diagnosis
No Spark
Ignition
coil
Abnormality
Cause (confirm it sequentially as follows)
Too low high-voltage
①The inner resistance is too small and it
should be tested by required tester.
②Low speed of the crankshaft.
③Interfered tester (It is normal that voltage is
always beyond the required value upon
several measurements.)
④Poor wiring contact of the ignition system.
⑤Poor ignition coil.
⑥Poor charging coil (measured at the
maximum voltage).
Side
voltage
No or interrupted high voltage
①Incorrect connection of the tester.
②Poor main switch.
③Poor contact of RELATED PARTS terminal.
④Short circuit or poor contact of the GND of
RELATED PARTS.
⑤Poor contact of charging coil (measured at
the maximum voltage).
⑥Poor trigger (measured at the maximum
voltage).
⑦Poor terminal of high-voltage wires.
⑧Poor RELATED PARTS group (when item
is checked to be abnormal or there is no
spark for spark plug.)
Normal high voltage, but no spark
①Poor spark plug or secondary leakage of the
ignition coil.
②Poor ignition coil.
Charging
coil
No high voltage
①The inner resistance is too small and it
should be tested by required tester.
②Low speed of the crankshaft.
③Interfered tester (It is normal that voltage is
always beyond the required value upon
several measurements.)
④Poor charging coil (Item ①-③ is checked
to be normal.)
No or interrupted high voltage
①Poor ignition coil.
②Poor charging coil.
Trigger
Too low high-voltage
①The inner resistance is too small and it
should be tested by required tester.
②Low speed of the crankshaft.
③Interfered tester (It is normal that voltage is
always beyond the required value upon
several measurements.)
④ Poor trigger (Item ① - ③ is checked to be
normal.)
No or interrupted high voltage
①Poor ignition coil.
②Poor trigger.